Zar Wali, The Bone Tyrant Ignighted Ground Bug

While fighting Zar Wali in hidden grotto, there are portions of his moves where he ignites the ground. However the ignited ground does not show, but appears invisible. This makes fighting him almost impossible as a glass cannon, even with perfectly dodging his attacks, if you roll into an area of invisible fire and have low max hp, you die.

This is not a player skill issue as I can always dodge his attacks. but the fact that I can't fight him because I cannot see the hazards on the ground because they're INVISIBLE makes fighting him impossible.